24 Sep
2024
24 Sep
'24
3:39 p.m.
On 24/09/2024 08.01, Thomas Baumgartner via sr-users wrote:
Technically the SDP i posted does not conform to this, but then there
is *RFC3264 8.2:*
/Existing media streams are removed by creating a new SDP with the
port number for that stream set to zero. The stream description MAY
omit all attributes present previously, and MAY list just a single
media format./
So which RFC takes precendence? If it’s RFC8866 5.7 then the device is
doing something wrong, but if it’s RFC3264 8.2 and i understand it
correctly so that the device can omit even the „c=“ line (… The stream
description MAY omit all attributes present previously…) then i would
argue that kamailio is doing something wrong.
My reading of this would be that just /attributes/ (`a=` lines) may be
omitted. The /connection address/ (`c=` line) is not an attribute, and
so still must be present, either at the session level or at the media level.
Although in practice it really doesn't make sense to have an address for
a rejected media, and a lenient parser may want to accept it anyway.
Cheers